Machine for making paper-box blanks.



"No. 871,487. PATENTED NOV. 19 1907.

- J. W. DBNMEAD. MACHINE FOR MAKING PAPER BOX BLANKS.

APPLICATION FILED MAY 21. 1904.

No. 871,487. PATENTED NOV. 19, 1907. J. W. DBNMEAD.

MACHINE FOR MAKING PAPER BOX BLANKS.

APPLICATION FILED MAY 21. 1904.

a SHEETSSHEET 2.

H #1 "'I 23; Q I l I Ma I I t) I I I I i iz I I I I No. 871,487.PATENTED NOV. 19, 1907.

J. W. DBNMEAD.

MACHINE FOR MAKING PAPER BOX BLANKS.

APPLICATION FILED MAY 21. 1904.

6 SHEETS-SHEET 3.

PATENTED NOV. 19, 1907.

J. W. DENMEAD. MACHINE FOR MAKING PAPER BOX BLANKS.

APPLICATION FILED MAY 21. 1904.

6 SHEETSSH-EET 4.

JNVJMTOR.

No. 871,487. PATENTED NOV. 19, 1907. J. W. DENMEAD. MACHINE FOR MAKINGPAPER BOX BLANKS.

APPLICATION FILED MAY 21. 1904.

' 8 SHEETS-SHEET 5.

WETN ESJEJ. P A Exam 1'02,

(WM, WlrNmsEs. LvvEA/rofl No. 871,487. PATENTED NOV. 19, 1907.

J. W. DEN MEAD.

MAOHINE FOR MAKING PAPER BOX BLANKS. APPLICATION FILED MAY 21. 1904.

6 SHEETS-SHEET 6.

M4 may UNITED STATES PATENT OFFICE.

JOHN W. DENMEAD, OF AKRON, OHIO, ASSIGNOR TO THE K. D. BOX AND COMPANY;

' OF CLEVELAND, OHIO,'A CORPORATION OF OHIO.

MACHINE Fen MAKING PAPER-BOX LANxs.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed May 21. 190%. Serial No- 208.992-

To all whom it may concern:

;Be it known that I, JOHN W. DENMEAD, a citizen of the United States,residing at Akron, in the county of Summit and State of Ohio, haveinvented a certainnew and useful Improvement in Machines for MakinPaper- Box Blanks, of which the following is a full,

clear, and exact description, reference being had to the accompanyingdrawings.

The object of this invention is to provide an efficient machine for therapid and automatic production of knockdown paper boxes.

plishes this.

Heretofore, so far as I'amaware, the machlnes have either required maleand female punches, which are expensive to make, or 7 paper previouslyout into sheets has been manua ly fed to an impressing mechanism,

"after which the margins have been broken off-by hand. This lattermethod entails a slow operation, a waste of paper at the margins, anddanger to the o erator. In my machine, by havi a brea -ofi mechanism,

i which may be varied according to the contour of the blank andoperating concurrently with a subsequent cutting and scoring impression,I am enabled to use the continuous automatic paper feed, with a cheaplyarranged ressing mechanism; This is one of the vita features of thepresent invention.

If the blanks are large, the partsevered by the break-off mechamsmmay bea single blank. With small boxes, however, several blanks will be ineach severed ortion; thereafter these blanks are simply roken up intosections on the properly scoredlines, leaving I knockdown boxes, wh ichneed only to be folded on their scored lines, and in some cases pastedto make a complete box.

Other features of my invention comprised in this application are'themechanism for feeding and controlling the paper, and the mechanismfor adjusting and throwi out of action the impression strokel; All ofthese tails of the intermittent feed, Fig. 6 being cross-section on thelines 6-6 of Fig. 1 and Fig. 7 a face view of the ratchet, as indicatedby the line 7-7 of Fig. 6; Fig. 8 is a bottom plan of the chase and itsinclosed cutting and scoring knives or rules; Fig. 9 is a top plan oftheblanks just produced and still connected with the web of paper therefollowing.

The frame of the machinecomprises a suitable base having two uprightframe standards, A. Between these standards and secured to them is thebed B, shown'as suitably ribbed on its under side. Slidable in ways acarried by the frame standards and above the bed is the reciprocatinghead O. This head is suitably strengthened by cross ribs and is carriedby a throu h shaft D. The projecting ends d, d of t 's shaft arejournaled 1n the upper ends of bars E, E respectively, which at theirlower ends surround eccentric projectionsfif on o posite ends of themain operating shaftF, w 'ch has its bearings carried b the standards A.From this it results th is reciprocated vertically.

To drive the shaft F, I provide a main driving shaft, G, which receivespower in some suitable manner and carries a air of 'pinions g, g meshingwith the pair 0- gears fflf on the shaft F.

Th knives or rules which do the cutting and scoring are carried on theunder side of the head, and thus with that head and the' at if the shaftFis rotated the head 0 represented by cross lines between parallellines. The various knives are suitably held between wooden furniture kand the whole is clamped in place by suitable wedges h In order to forcethe paper away from the cutting knives after they have operated,

. suitable resilient material, preferably cork, is mounted on thefurniture adjacent to these knives. Some of these corks being indicatedat h in Fig. 8. This arrangement of blocking up the knives in a chase isa common construction.

.the chase slid out.

The paper Z is fed from a continuous roll, not shown, by suitablemeansto be hereinafter described, between the chase and the impression plateI) resting on the upper face V of the bed as the head comes down in itsreciprocation.

The paper is thus. cut and Y scored according to theform described asindicated at z in Fig. 9. .Thereafter it is fed forward bysteps justequal to the longitudinal depth of the blank.

The cutting and scoring does not entirely sever the blank from-the paperweb, wherefore the-action of the feeding mechanism in shoving forwardthe web shoves out in front of the machine the blank thus cut andscored. At the proper point in advance of the head, I provide abreak-off mechanism, adapted to the contour of the blank impressed. Thisbreak-off mechanism, as shown, consists of a pair of cooperating bars,J, J, the formerof which is stationarily held by a suitable bar 1mounted on the frame standards A, and the latter of which is carried byspring arms j. extending from a rock shaft 7' This rook shaft is mountedin suitable bracketsand is operated by an arm 7' connected by a link 7'with a rock arm 7' Rigid with this rock arm is an arm 9' which has aroller j adapted to be engaged and depressed by a cam Is on a diskKsecuredto'the end of the shaft F.

The bar J is normally held before the bar J as indicated in Fig. 1' bythe spring 3 con-' At the proper time,

nected to the link If, operating through the however, the cam mechanismdescribed, brings down the bar J,

which severs the foremost blank.

The bars J, J are located a definite distance in advance of the form onthe chase,.a d1stance which is either equal to, or some lntegralmultiple of, the depth of the form length.- wise of the web. As shown inthe drawing, the operating edge of the bars J, J is 1n advance of therearmost line, being out by the knives in the chase three times thedepth of the blank. It thus results that after one blank is impressed,the paper being ad-' vanced a distance equal thereto, a contiguoussecond and then third blank. is impressed, while the first one(indicated by dotted lines 2, in Fig. 8) is idle in advance of the chaseand behind the bars J, J, but while the fourth blank is being impressed(as the parts are adjusted in the drawing) the rearmost edge of thefirst blank has just come into alinement with the operating edges of thebars J, J, wherefore the depression of bars J, breaks off the foremostblank.

By reason of the arms 9' being resilient,

the bar J delivers something of a blow to the foremost blank, whichsever it and allows it easy method for forming the irregular contourfrequently required,'a's it is only necessary to take a board and saw itwith a scroll or band saw along a line to correspond with the edge ofthe blank, one cut of the saw thus providing the cooperating contours ofthe two bars J, J.

The-bar J is adjusted in place by 'changing the position of itssupporting bar .j as required and then screwing the bar J in place inthe required .position on the bar 7'. The

bar 7' is shown as ofiset forward so that a greater range ofadjustmentmay be given it by turning itaround to be in a osition offset rearward.--A number of ho es are provided in the edge of the standards A forsecuring this bar; The bar J. is adjusted by employing shorter or longerspring straps j as required, orsecuring "the bar to these straps at adifferent point. Inasmuch, however, as the blank is nearly disseveredwhen it reaches the bars J, J it is not necessary that these bars bepositioned with great accuracy.

As stated, the paper is fedforward'intermittently by steps equaling thedistance across the blank. I. will now describe the mechanism fordoingthis, premising that I provide in addition to the intermittently operated' immediate forwarder, a continuous feeding mechanism to supplythe paper thereto. v The paper Z comes from the continuous feed over aguide roll P, between set collars p thereon, thenbetween the feedingrolls Q, Q and then overanother guide roller R surmounted by cooperatingrolls R and fingers.

RE, extending beneath, the shaft 'of the roll lt. From this it resultsthat if the roller Q be rotated so that the upper portion of itsperiphery movesforward, the paper is drawn .130

' and its impression platen.

' seat rollers g spring-pressed upward from the rear and shoved betweenthe chase Suitable means are provided to give the roller Q such movementintermittently and timed so that the paper is fed forward while thereciprocating head is in the uppermost portion of its travel. Themechanism shown consists of the following: On a reduced extension of theshaft Q carrying the roll Q? is mounted a disk g having recesses g inits periphery, in which springs The rollers thus engage the in nerperiphery of a flanged member or cup g which is loosely journaled on theshaft. Owing to the incline of the recesses g and the springs g if themember g is rotated in the direction to drive the shaft Q forward, therollers g are jammed between the disk g and member 1 in causing theshaft to rotate. This feeds thepaper. When, however, the member g ismoved in the o posite direction, thenthe rollers 51* roll id j intodeeper portions of their recesses and shaft Q is not rotated. Thus analternate forward and back rotation of the cup g is'commuted into anintermediate but always fprward rotation of the shaft Q.

To give the forward and back rotation to the cup g, 1 form on it a gearg with which mesh rack teeth formed on a bar q. i The lower end of thisbar is secured eccentrically to the disk K, wherefore the rotation ofthe disk from the main shaft F reciprocates the rack bar q, and thisintermittently feeds the paper. The rackbar is guided adjacent to thepinion g by an embracing yoke 9 carried by the shaft Q adjacent to thebracket i a which forms the outermostbearin for the shaft. A plate g isshown secured to the on g to retain the ratchet rollers in place.

n order to adjust the amount of paper fed forward on each yoke of themachine, I adjust the throw of the rack bar g. This I accomplish bymounting the crank in k for the bar on a block which is carried in aslot k in the disk K and forms a nut on a screw 1: This screw issuitably held in place and has a projecting end by which it may berotated to vary the position of the .crank pin k and thus vary the throwof the link As heretofore stated, the aper is continuously fed towardthe mac acted upon by the intermittent feed. This continuous feed,however, should be adjusted in the machine according to the intermittentfeed, so that there will always'be slack enough to provide for theintermittent feed without undue excess thereof. To accomphsh this, Iprovide the following mech-;

anism.

Referring to Figs-1 and 2-, T represents a roll on a shaft which ismounted in suitable standards t. Across this roll lies the web of paper,coming from a suitable supply, not

'gency e before it is shown. Pivoted in the standards t is a rock shaftt, to which are secured arms t carrying a shaft i on which is mounted agripping roll T, which is similar to and cooperates with the roll T.Depending from the rock shaft t is an arm t connected by a link t with ahand lever t. The movement of this lever forward or backward thus swingsthe gripping roll T toward or from the roll T. to give the required gripto the paper according to the thickness thereof, or to throw the griping roll out of action altogether. A suitab e notch bar t carried bythe frame cooperates with the desired position. The roll T. ispositively located to advance the gripped paper by means of a belt iwhich takes on to a pulley t on the end of the shaft t This belt, beingcontinuously driven, continuously feeds the paper forward when the rollT is in position to grip it.

' To overn the speed of the continuous feed, provide the followingmechanism. The belt t surrounds and is driven by a pulley u on a shaft Ujournaled in the frame standards A. On this'shaft U is a wideconical-faced pulley 'u/ on which takes a belt 'u from a complementary,reversely-placed mounted on the shaft F. A belt shipper a forks over thebelt a is slidable on a rod 11. and has its upper end threaded to form anut, which takes around a revoluble .screw it. screw it are mounted inthe frame standards conical pulley a The rod 11. and the A, thescrew'ha'ving a hand wheel u on its end by which it may be rotated. Theturnin of this hand wheel, therefore, moves the.

shipper in one direction or'theother, shiftin the elt and changing thespeed (lGlIlVGIGL from the shaft Fto the shaft U, and hence to thecontinuous feed.

In order to adjust the stroke of the reciprocating head 0 to give justthe right impression, as well as to provide means for throwing it out ofaction in case of emer- 1 make the ends (I, d of the shaft D, on whichthe bars D, D are journaled eccentric of the shaft as shown. On theeccentric end, d washers (1 while on the end of the.other eccentric issecured a lever V..- This lever carries a hand iece c, which isconnected by are secured suitable retaininga rock arm an link with asliding pawl V on 4 the lever. This awl cooperates with any one of aseries 0 notches in the segmental bar V carried by the head 0. Thus bythe means of the hand piece '0 the lever may be unlocked and swung torock the shaft D, and thus by reason of the eccentric ends (1, dchangethe effective length of the. connection to the main shaft F. Thisrovides an adjustment according to the the ess of paper, while ifthelever V is swung to an extreme position the headC is maintained.

7 out of cooperation with the bed at the exfeed has stopped theintermittent feed treme lowest stroke, wherefore an emergency throwout1s provided.

'The lever V and the lever t which may throw out the. continuous feed.are convenlently accesslble to the attendant at the front of themachine, and if anything should.

device, an intermittentfeed therefor, a continuous feed to'theintermittent feed, said continuous feed comprising a pair of grippingrollers and means for rotating one of them, a rock shaft, a pair of armscarried thereby, a shaft carried by said arms on which one of c saidrollers is mounted, a third arm secured to the rock shaft, a lever, anda link connecting the same with said third arm whereby the actuationofthe lever varies the grip of said rollers.

-\2. In a machine for making paper box blanks, the combination of asuitably guided head, a shaft mounted therein, eccentric extensions forsaid shaft, bars j ournaled lever secured to one'of said extensions forrocking said shaft, and means for locking said lever in variousositions. I 3. In a machine or making paper bo blanks, the combinationof a suitably guided head, a shaft mounted therein, eccentricextenslonsfor said shaft, bars journaled on said extensions, a-lever secured toone of said extensions for rocking said shaft, a

locking segment carried by the head, a looking pawl carried by saidlever, a main shaft,

on said extensionsfor operating the head, a

a pairof eccentrics thereon around which the lower ends of said barstake.' and means for operating said main shaft. 4*. In a machine formaking paper box blanks the combination with a suitably uided head,reciprocating means for said ead, a shaft'journaled in said head andsaid reciprocating means, the respective bearings for the shaft thereinbein relatively eccentrio, and means for rotatlngthe shaft and holdingit in different positions. In testimony whereof, I hereunto aflix msignature in the presence of two witnesses.

JOHN w. DENM-EAD.

Witnesses:

E. L. THURSTON, B. -W. BRooKETT.

